Description

Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene and .alpha.-hydro-.omega.-hydroxypolyoxy(methyl-1,2-ethanediyl) CAS NO 65636-36-4 is a specialized polyurethane prepolymer or block copolymer, engineered to deliver a unique balance of elastomeric and adhesive properties. This compound is valued for its ability to form durable, flexible, and chemically resistant films, coatings, and matrices. It is a critical raw material for formulators and manufacturers in the adhesives, sealants, coatings, and advanced materials sectors seeking high-performance polymer solutions.

Application

• High-Performance Adhesives & Sealants: A key component in formulating structural adhesives, flexible sealants, and pressure-sensitive adhesives (PSAs) for automotive, construction, and aerospace applications.
• Specialty Coatings & Inks: Used to create protective, abrasion-resistant, and flexible coatings for textiles, industrial fabrics, and specialty printing inks.
• Elastomer & Rubber Modification: Acts as a compatibilizer or reinforcing agent to enhance the toughness, flexibility, and processing characteristics of thermoplastic polyurethanes (TPU) and other elastomers.
• Composite Materials: Serves as a matrix resin or binder in composite systems, contributing to impact resistance and adhesion between fibers and fillers.
• Medical Device & Pharmaceutical Coatings: Potential use in formulating biocompatible, controlled-release coatings for medical devices, subject to appropriate regulatory compliance and purity grades.
• Encapsulation & Potting Compounds: Employed in electronics and electrical applications to protect sensitive components from moisture, vibration, and environmental stress.

Basic Information

Item	Details
Product Name	Poly(oxy-1,4-butanediyl), .alpha.-hydro-.omega.-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene and .alpha.-hydro-.omega.-hydroxypolyoxy(methyl-1,2-ethanediyl)
CAS No.	65636-36-4
Molecular Formula	Contact for details
Molecular Weight	Variable (Polymer)
Synonyms	Poly(tetramethylene ether glycol)-co-Poly(ethylene glycol) Toluene Diisocyanate (TDI) Copolymer; PTMEG-PEG-TDI Copolymer; Polyurethane Prepolymer based on PTMEG, PEG, and TDI; α-Hydro-ω-hydroxypoly(oxy-1,4-butanediyl)-block-α-hydro-ω-hydroxypoly(oxyethylene) polymer with 2,4-Toluene Diisocyanate; Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene and α-hydro-ω-hydroxypoly(oxyethylene); TDI-PTMEG-PEG Terpolymer; Polyether Polyurethane Block Copolymer
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems. Each batch undergoes comprehensive analysis to ensure consistency in critical parameters such as isocyanate (NCO) content, hydroxyl value, viscosity, and molecular weight distribution. Certificates of Analysis (COA) documenting these specifications are provided with every shipment. We support customer-specific quality audits and can tailor specifications to meet the requirements of ISO, GMP, or other relevant regulatory frameworks for industrial and potential specialty applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures recommended for the specific grade (typically between 15°C and 25°C). This product is hygroscopic (moisture-sensitive); containers must be kept sealed to prevent absorption of atmospheric moisture, which can affect product performance. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Isocyanate (NCO) Content	Contact for details
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity @ 25°C (cP)	Contact for details
Specific Gravity @ 25°C	Contact for details
Moisture Content (Karl Fischer)	< 0.1%
Color (Gardner)	≤ 3

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.